Home » Server Options » RAC & Failsafe » ORA-12516: TNS:listener could not find available handler with matching protocol (Oracle 10g)
ORA-12516: TNS:listener could not find available handler with matching protocol [message #410340] Fri, 26 June 2009 07:26 Go to next message
sanei05
Messages: 104
Registered: September 2008
Senior Member
Hi,

i am getting the below error, when i am trying to connect to the database.

ORA-12516: TNS:listener could not find available handler with matching protocol

please can anyone provide me the solution.

P.S. the database is in RAC node structure. I see the listener and tns entries are fine.

Urgent Pls.

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Re: ORA-12516: TNS:listener could not find available handler with matching protocol [message #410351 is a reply to message #410340] Fri, 26 June 2009 08:26 Go to previous messageGo to next message
ebrian
Messages: 2794
Registered: April 2006
Senior Member
Try to increase your PROCESSES parameter.

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Re: ORA-12516: TNS:listener could not find available handler with matching protocol [message #410363 is a reply to message #410340] Fri, 26 June 2009 09:22 Go to previous message
sandesh_dba
Messages: 4
Registered: April 2008
Junior Member
First check weather listner port is locked by any other process and try to kill that process.
This should work.

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